อัปโหลดแล้ว 5 ปี ก่อนหน้านี้
Everything in universe is made up of matter and it can be classified on the basis of physical state and chemical constitution. It has various properties and characteristics. At Extramarks you will get full study material of Matter and it's composition of class 7 chemistry, ICSE board. Visit https://www.extramarks.com/study-material/icse-class-7/chemistry-matter-and-its-composition-matter-and-its-composition
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